<?php

/**
 * @file
 * Contains the node RSS row style plugin.
 */

/**
 * Plugin which performs a node_view on the resulting object
 * and formats it as an RSS item.
 */
class views_plugin_row_node_rss extends views_plugin_row {

    // Basic properties that let the row style follow relationships.
    var $base_table = 'node';
    var $base_field = 'nid';

    function option_definition() {
        $options = parent::option_definition();

        $options['item_length'] = array('default' => 'default');

        return $options;
    }

    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);

        $form['item_length'] = array(
            '#type' => 'select',
            '#title' => t('Display type'),
            '#options' => array(
                'fulltext' => t('Full text'),
                'teaser' => t('Title plus teaser'),
                'title' => t('Title only'),
                'default' => t('Use default RSS settings'),
            ),
            '#default_value' => $this->options['item_length'],
        );
    }

    function render($row) {
        // For the most part, this code is taken from node_feed() in node.module
        global $base_url;

        $nid = $row->{$this->field_alias};
        if (!is_numeric($nid)) {
            return;
        }

        $item_length = $this->options['item_length'];
        if ($item_length == 'default') {
            $item_length = variable_get('feed_item_length', 'teaser');
        }

        // Load the specified node:
        $node = node_load($nid);
        if (empty($node)) {
            return;
        }

        $node->build_mode = NODE_BUILD_RSS;

        if ($item_length != 'title') {
            $teaser = ($item_length == 'teaser') ? TRUE : FALSE;

            // Filter and prepare node teaser
            if (node_hook($node, 'view')) {
                $node = node_invoke($node, 'view', $teaser, FALSE);
            } else {
                $node = node_prepare($node, $teaser);
            }

            // Allow modules to change $node->teaser before viewing.
            node_invoke_nodeapi($node, 'view', $teaser, FALSE);
        }

        // Set the proper node part, then unset unused $node part so that a bad
        // theme can not open a security hole.
        $content = drupal_render($node->content);
        if ($teaser) {
            $node->teaser = $content;
            unset($node->body);
        } else {
            $node->body = $content;
            unset($node->teaser);
        }

        // Allow modules to modify the fully-built node.
        node_invoke_nodeapi($node, 'alter', $teaser, FALSE);

        $item = new stdClass();
        $item->title = $node->title;
        $item->link = url("node/$row->nid", array('absolute' => TRUE));
        $item->nid = $node->nid;
        $item->readmore = $node->readmore;

        // Allow modules to add additional item fields and/or modify $item
        $extra = node_invoke_nodeapi($node, 'rss item');
        $item->elements = array_merge($extra, array(
            array('key' => 'pubDate', 'value' => gmdate('r', $node->created)),
            array(
                'key' => 'dc:creator',
                'value' => $node->name,
                'namespace' => array('xmlns:dc' => 'http://purl.org/dc/elements/1.1/'),
            ),
            array(
                'key' => 'guid',
                'value' => $node->nid . ' at ' . $base_url,
                'attributes' => array('isPermaLink' => 'false')
            ),
                )
        );

        foreach ($item->elements as $element) {
            if (isset($element['namespace'])) {
                $this->view->style_plugin->namespaces = array_merge($this->view->style_plugin->namespaces, $element['namespace']);
            }
        }

        // Prepare the item description
        switch ($item_length) {
            case 'fulltext':
                $item->description = $node->body;
                break;
            case 'teaser':
                $item->description = $node->teaser;
                if (!empty($item->readmore)) {
                    $item->description .= '<p>' . l(t('read more'), 'node/' . $item->nid, array('absolute' => TRUE, 'attributes' => array('target' => '_blank'))) . '</p>';
                }
                break;
            case 'title':
                $item->description = '';
                break;
        }

        return theme($this->theme_functions(), $this->view, $this->options, $item);
    }

}

